Without meaning to shill for this vendor, they have really taken the Z restoration process a completely new level when compared with the bad old days of Tabco-or-make-your-own. I just checked their website and was pleasantly surprised to see that they've pretty much doubled their range of Z repair panels from the time when I last checked in 2020 (the 240Z catalog now includes 44 items). Some of the noteworthy additions:
radiator bulkhead
front inner fender patch panels, c/w separate 'pocket' piece for the crossmember join area and separate 'doubler' panel for the K-box area
firewall repair panels (lhs and rhs)
battery tray - separate, or c/w inner fender patch panel
dogleg repair pieces - inner and outer, plus lower B-pillar piece
front fender lower-rear patch panels, c/w mounting details
Worth a look.
KF Vintage JDM 240Z
Separate catalogs for 280Z, 510 and 620 (!)